Mendel postulated that individuals have genetic elements that exist in pairs, which determine a single phenotype. What do we now know these pairs of elements to be?
A) a sperm and an egg
B) pairs of centromeres
C) two alleles of a gene on homologous chromosomes
D) two haploid sets of chromosomes
E) pairs of sister chromatids
Answer: C
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In your research, you have discovered that Protein X is often ubiquitinated in people with a certain disease. What would you predict about levels of Protein X in these patients?
A. Levels of Protein X will be low due to degradation in the proteasome. B. Levels of Protein X will be the same, just carrying a ubiquitin tag. C. Levels of Protein X will be increased due to transcriptional activation. D. Levels of Protein X will be decreased due to negative feedback on transcription. E. Levels of Protein X will be increased due to protection from degradation. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean? Gather Content · What do you already know about ubiquitination? Consider Possibilities · What other information is related to the question? Which information is most useful? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Which type of cell could not be used for karyotyping?
A) Red blood cell B) White blood cell C) Fibroblast D) Skin cell
The changes in velocity of blood flow seen in section II are most directly influenced by which of the following?
a. The increasing blood pressure within the vessels b. the distances of the vessels from the heart c. The volume of blood pumped in one-systole-diastole cycle d. The cross-sectional area of vessels e. The thickness of the vessel walls
For which of the following is the biological species concept least appropriate?
a. Plants b. Animals c. Both prokaryotes and fossils d. Prokaryotes e. Fossils